The fact that it auto saves any new tab that you filled with thoughts, todo's, pieces of logs,... is super handy. When rebooting they just appear as unsaved new tabs, as if you never closed notepad++. Zero keep effort. To toss, you just close the tab and click no.
I like the small QoL features it has accrued over the years, like renaming new autosaved tabs! It helps me stay organized when I create many unsaved documents to store separate info for a few days.
Any sane text editor won't let you rename a new document until you save it, but it is useful for some use cases.